Support for Office 365 group notebooks. More about group support below.

The Notes.Read.All and Notes.ReadWrite.All permission scopes for organization-level access to site and group notebooks. We previously allowed access to site notebooks using the other OneNote scopes, but this is no longer supported.

New parentNotebook and parentSection navigation properties for pages. The default page query now returns the id, name, and self properties of the page's parent section. (consumer and enterprise APIs)

New level and order properties for pages. These show the indentation level of the page and the order of the page within the parent section. To get them, use the pagelevel parameter in queries for pages in a section or for a specific page, for example: GET ../sections/{id}/pages?pagelevel=true (consumer and enterprise APIs)

Also, the following APIs moved from preview to production:

POST /sectiongroups/{id}/sections,

POST /notebooks/{id}/sectiongroups,

POST /sectiongroups/{id}/sectiongroups(consumer and enterprise APIs)

CopyNotebook,

CopyToNotebook,

CopyToSectionGroup,

CopyToSection (enterprise API only)

Note the following restrictions for working with the enterprise API:

The search query string option is not supported for enterprise notebooks.

The POST /notes/pages request which creates a page in the default section of the default notebook is not supported for site or group notebooks.

Only the me keyword is supported to access personal notebooks on OneDrive for Business. This represents the current user.

Only the myorganization keyword is supported to access site or group notebooks. This represents the tenant that they the current user is logged into.

Office 365 groups support

Office 365 groups (also known as unified groups) are part of the Office 365 connected experience. Group members can share files, email, and more. In terms of the OneNote API, groups are another entity that can own OneNote notebooks, like users and SharePoint sites.

To access a group's OneNote content, start with the ../myorganization/groups/{id}/notes/ service root URL, and then navigate to OneNote resources. For example, this URI gets all pages from a particular section:

GET https://www.onenote.com/api/v1.0/myorganization/groups/{id}/notes/sections/{id}/pages

For now, you'll need separate OAuth 2.0 access tokens: One to get group information and one to access the group's notebooks.

But you can take advantage of Discovery Service v2.0 to access Office 365 services, including OneNote (as the Notes capability). Your users sign in once, and you can get a token for Discovery Service that you use to get tokens for other services you have access to.